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APA Citation
Porta, M., Malats, N., Guarner, L., Carrato, A., Rifà, J., Salas, A., Corominas, J. M., Andreu, M., & Real, F. X. (1999). association between coffee drinking and K-ras mutations in exocrine pancreatic cancer. PANKRAS II Study Group.. Journal of epidemiology and community health, 53(11), 702–709. http://access.bl.uk/ark:/81055/vdc_100135558745.0x000029